- improvement: long localized messages are in HTML files instead of $lang

array. This is the case of admin/help and about pages.

- deletion: of unused functions (ts_to_mysqldt, is_image, TN_exists,
  check_date_format, date_convert, get_category_directories,
  get_used_metadata_list, array_remove, pwg_write_debug,
  get_group_restrictions, get_all_group_restrictions, is_group_allowed,
  style_select, deprecated_getAttribute).

- new: many new contextual help pages to replace descriptions previously
  included in pages.

- modification: reorganisation of language files. Deletion of unused
  language keys, alphabetical sort. No faq.lang.php anymore (replaced by
  help.html). Only done for en_UK.iso-8859-1.


git-svn-id: http://piwigo.org/svn/trunk@862 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/thumbnail.php

@@ -169,13 +169,7 @@ $template->assign_vars(array(
   'L_THUMBNAIL'=>$lang['thumbnail'],
   'L_PARAMS'=>$lang['tn_params_title'],
   'L_GD'=>$lang['tn_params_GD'],
-  'L_GD_INFO'=>$lang['tn_params_GD_info'],
-  'L_WIDTH_INFO'=>$lang['tn_params_width_info'],
-  'L_HEIGHT_INFO'=>$lang['tn_params_height_info'],
   'L_CREATE'=>$lang['tn_params_create'],
-  'L_CREATE_INFO'=>$lang['tn_params_create_info'],
-  'L_FORMAT'=>$lang['tn_params_format'],
-  'L_FORMAT_INFO'=>$lang['tn_params_format_info'],
   'L_SUBMIT'=>$lang['submit'],
   'L_REMAINING'=>$lang['tn_alone_title'],
   'L_TN_STATS'=>$lang['tn_stats'],
@@ -185,6 +179,8 @@ $template->assign_vars(array(
   'L_TN_MIN'=>$lang['tn_stats_min'],
   'L_TN_AVERAGE'=>$lang['tn_stats_mean'],
   'L_ALL'=>$lang['tn_all'],
+
+  'U_HELP' => PHPWG_ROOT_PATH.'/popuphelp.php?page=thumbnail',
   
   'T_STYLE'=>$user['template']
   ));